Let me make an important clarification point - God has never based salvation on law keeping. Jews and Gentiles were/are always saved by grace and not by their works. God instituted the Law of Moses to bring all to realize their need for a Savior/Redeemer - it is our schoolmaster to bring us to Christ (Galatians 3:24). Even the sacrifices of the Old Testament were as a covering (expiation) of sin that foretold the coming Lamb of God who would take away (propitiation) the sins of the world. Obedience to the Law/ordinances of Moses governed Israel's relationship with God whereas today the indwelling Holy Spirit has written God's eternal law upon our hearts. We relate to God today through faith.
(1) Reveal the holy character of the eternal God to the nation of Israel (Leviticus 19:2; 20:7–8).
(2) Set apart the nation of Israel as distinct from all the other nations (Exodus 19:5).
(3) Reveal the sinfulness of man (cf. Galatians 3:19). Although the Law was good and holy (Romans 7:12), it did not provide salvation for the nation of Israel. “No one will be declared righteous in God’s sight by the works of the law; rather, through the law we become conscious of our sin” (Romans 3:20; cf. Acts 13:38–39).
(4) Provide forgiveness through the sacrifice/offerings (Leviticus 1—7) for the people who had faith in the Lord in the nation of Israel.
(5) Provide a way of worship for the community of faith through the yearly feasts (Leviticus 23).
(6) Provide God’s direction for the physical and spiritual health of the nation (Exodus 21—23; Deuteronomy 6:4–19; Psalm 119:97–104).
(7) Reveal to humanity that no one can keep the Law but everyone falls short of God’s standard of holiness. That realization causes us to rely on God’s mercy and grace. When Christ came, He fulfilled the Law and with His death paid the penalty for our breaking it (Galatians 3:24; Romans 10:4). By faith in Him, the believer has the very righteousness of Christ imputed to him. (from https://www.gotquestions.org/Mosaic-Law.html)
So, what will be the purpose of the reinstituted law, feast days, sacrifices and ordinances during the Millennium? Perhaps:
In reading through the Torah, we cannot help but notice that there are several social institutions described that never seem to achieve their fullness in Israel's history. For example:
Judicial system
Agricultural system
Feasts and calendar
Priesthood
Settlement of land
If all these elements are in the Scriptures (and "Scripture cannot be broken," John 10:35b), mustn't there be a time when they will come into their fullness? Some dismiss all these passages as simply Old Covenant, that are done away with by the New, but we believe that through Yeshua, we will see "fullness of all things" —including everything in the Torah and Prophets, in heaven and on earth (Acts 3:21; Eph. 1:10).
Unfinished Business
With this in mind, we can read the Torah in a prophetic way, with a future fulfillment yet to come (Matt. 5:17-18). End-times prophecies are filled with references to Torah elements: Isaiah 2 describes the millennial kingdom in which "the Torah will go forth from Zion" (v. 3, TLV); Isaiah 60-66 speaks of a renewal of Zion and resettlement of the land; Isaiah 66 makes reference to food laws (v. 17), Levites (v. 21), new moons and Sabbaths (verse 23).
The last nine chapters of Ezekiel are perhaps the most challenging. A new temple is built, described in utmost detail (Chapters 40-41), that is then filled with the glory of God (Chapter 43), with a new priesthood and sacrificial system (Chapter 44), including all the feast celebrations (45), led by the Messianic King (46), in a renewal of nature and agriculture (47) and resettlement of the land according to the tribes of Israel (48). What are we going to do with all these chapters?
The end of the book of Joel describes a restoration of Zion both spiritually and economically after the events of the end times. Micah speaks of the former kingdom being reestablished (Mic. 4:8). Zechariah 14 describes as well a restoration of feasts and temple worship after the Second Coming of Messiah. From these quite numerous Scriptures, it seems that there will be a renewal and observance of the Torah during the Millennial Kingdom, which will be consistent with New Covenant priorities and emphases, as taught by Yeshua and the apostles.
God's kingdom has order. The entire Bible, including the Torah, defines that divine order. ("Torah" means not only "law" but "instruction.") The ultimate goal of the gospel of the kingdom, fulfilled in the Millennium, is to establish God's order on the earth for Israel and the nations. Let us pray for wisdom to understand the right integration of gospel, law and kingdom in these end times. (from https://www.charismanews.com/opinion/standing-with-israel/73476-why-moses-law-is-key-to-understanding-end-times-millennium)
A most excellent post! Thank you so much for sharing it, BB!